Concerns are growing that the housing market recovery could stumble amid stubbornly high unemployment, a sluggish economy and faltering consumer confidence. U.S. home sales have collapsed since federal homebuyer tax credits expired in April.

That’s one reason fewer than one-third of homes repossessed by lenders are on the market, said Rick Sharga, a senior vice president at RealtyTrac.

Unemployment, as measured by Gallup without seasonal adjustment, increased to 10.1% in September — up sharply from 9.3% in August and 8.9% in July. Much of this increase came during the second half of the month — the unemployment rate was 9.4% in mid-September — and therefore is unlikely to be picked up in the government’s unemployment report on Friday.http://www.gallup.com/poll/143426/Gallup-Finds-Unemployment-September.aspx